Question

Can someone help with this???

.... then which of the following is a solution for x?
(1) x = 5
(3) x = 7
(2) x = 6
(4) x = 8

Answer 1

x=7

Explanation:

The pattern is: i^1 = i, i^2 = −1, i^3 = −i, i^4 = 1, i^5 = i, i^6 = −1 and repeats again, so x = 7 would be i^20 =
`(i^(4) )^(5)` = 1^5 = 1